What is GST?

The Goods and Services Tax (GST) is India's comprehensive, destination-based indirect tax system that applies to the supply of most goods and services. Since its introduction in 2017, it has replaced multiple central and state taxes, creating a unified market but also introducing a complex compliance regime for startups. For a business, GST involves several key processes: registration (mandatory if turnover exceeds ₹20 Lakhs for services or ₹40 Lakhs for goods, or if selling through e-commerce), invoicing (using prescribed GST formats), and the regular filing of returns (such as GSTR-1 for sales and GSTR-3B for summary tax payment). A core advantage of the GST system is the "Input Tax Credit" (ITC), which allows a business to deduct the tax it has paid on its purchases from the tax it collects on its sales, effectively taxing only the value added at each stage. For startups in sectors like SaaS or D2C, navigating GST requires a deep understanding of "Place of Supply" rules, managing multi-state registrations if using various warehouses, and ensuring meticulous compliance to avoid steep penalties and interest. Proactive GST management is essential for maintaining smooth operations, as non-compliance can block working capital and deter larger B2B clients who rely on your invoices to claim their own tax credits. It also includes concepts like RCM (Reverse Charge Mechanism) for certain services.